Finding the Third Proportional to 79,720 and 118,040

Step by Step Solution

1. Step 1: Write the proportion equation
   79,720 : 118,040 = 118,040 : x
2. Step 2: Convert to fraction form
   79,720/118,040 = 118,040/x
3. Step 3: Cross multiply
   79,720x = 118,040 × 118,040
4. Step 4: Simplify right side
   79,720x = 13,933,441,600
5. Step 5: Solve for x
   x = 13,933,441,600/79,720
6. Step 6: Final answer
   x = 174,779.75